ClassID:

127061

D21H23/765 - CPC Classification

Classification description:

Processes or apparatus for adding material to the pulp or to the paper characterised by choice of auxiliary compounds which are added separately from at least one other compound, e.g. to improve the incorporation of the latter or to obtain an enhanced combined effect Addition of all compounds to the pulp

Recent Application in this class:
#1
20210002827
2021-01-07

Method for manufacture of paper or board and paper or board obtained by the method

#2
20180363249
2018-12-20

Methods to reduce rewinder breaks during paper production from recycled paper furnish

#3
20160160445
2016-06-09

Composition containing a cationic trivalent metal and debonder and methods of making and using the same to enhance fluff pulp quality

#4
20120035306
2012-02-09

Anionic functional promoter and charge control agent with improved wet to dry tensile strength ratio

#5
20110030908
2011-02-10

Composition containing a cationic trivalent metal and debonder and methods of making and using the same to enhance fluff pulp quality

#6
20100193147
2010-08-05

Anionic functional promoter and charge control agent with improved wet to dry tensile strength ratio

#7
20090283232
2009-11-19

PAPER AND PAPERBOARD PRODUCTION PROCESS AND CORRESPONDING NOVEL RETENTION AND DRAINAGE AIDS, AND PAPERS AND PAPERBOARDS THUS OBTAINED

#8
20090050282
2009-02-26

Process for the manufacture of paper and board

#9
20090008050
2009-01-08

METHODS FOR PRODUCING WET-SPUN NON-WOVEN FABRICS

#10
20080000601
2008-01-03

Method for the production of paper, paperboard and cardboard

#11
20060249268
2006-11-09

Anionic functional promoter and charge control agent with improved wet to dry tensile strength ratio

#12
20060243407
2006-11-02

Paper and paperboard production process and corresponding novel retention and drainage aids, and papers and paperboards thus obtained

#13
20060124264
2006-06-15

Wet strength and softness enhancement of paper products

#14
20060048908
2006-03-09

System for control of stickies in recovered and virgin paper processing

#15
20060000568
2006-01-05

Papermaking furnish comprising solventless cationic polymer retention aid combined with phenolic resin and polyethylene oxide

#16
20050266758
2005-12-01

Wet-spun non-woven fabric and method for producing the same

#17
20050211405
2005-09-29

Heat resistant food packing material and method of manufacturing the food packing material

#18
20050209389
2005-09-22

Aqueous silica-containing composition

#19
20050173088
2005-08-11

White pitch deposit treatment

#20
20050150622
2005-07-14

Paper and paperboard production process and corresponding novel retention aids, and papers and paperboards thus obtained